InChI=1/C16H22N2O2/c1-2-7-18-8-9-20-15-13-10-12(16(17)19)4-3-11(13)5-6-14(15)18/h3-4,10,14-15H,2,5-9H2,1H3,(H2,17,19)/t14-,15-/m1/s1/f/h17H2 4E453BF9CD4F0F1B